Abnormal post-prandial glucagon-like peptide release in patients with Crohn's disease

Pietro Lucotti, Elisabetta Lovati, Marco Vincenzo Lenti, Beatrice Valvo, Elisa Sprio, Nicola Aronico, Paolo Giuffrida, Dominica Dell'Aera, Alessandra Pasini, Cristina Ubezio, Mariangela Delliponti, Carmine Tinelli, Gino Roberto Corazza, Antonio Di Sabatino

Research output: Contribution to journalArticlepeer-review

Abstract

Background and aims: Glucagon-like peptide GLP-1 and -2 have been shown to regulate immune responses in immune-mediated disorders, including Crohn's disease (CD). Our aim was to investigate post-prandial GLP release and its potential link to chronic inflammation, insulin secretion/sensitivity and body composition changes in CD patients. Methods: Fifteen patients with CD, 15 healthy controls (HC) and 15 patients with metabolic syndrome (MS) were recruited. All patients underwent assessment of body composition by means of bio-impedance followed by a meal tolerance test (MTT). Only one CD patient did not tolerate the MTT and was excluded. Results: Basal GLP-1 levels were up-regulated in CD, however, as compared to HC, stimulated GLP-1 secretion was significantly reduced in CD (-31 %, p < 0.05) as in MS (-52 %, p < 0.003). Similarly, basal GLP-2 levels were comparable to that of HC, while response to MTT in CD was virtually absent (p < 0.05). Similar fasting insulin sensitivity, estimated 1st and 2nd phase insulin secretion and insulinogenic index were found in CD and in HC. Post-prandial GLP secretion was positively correlated to insulin secretion indices, both in CD and MS. In CD, high-sensitive C reactive protein levels (hsCRP) and extra-cellular to intra-cellular water ratio (ECW/ICW), an index of cellular inflammation, were inversely correlated with stimulated GLP-1 (p < 0.05 and p < 0.01, respectively) levels. Conclusion: CD is characterized by abnormal fasting and post-prandial GLP levels. Circulating GLP influences subclinical inflammation and glucose metabolism in CD patients, but not their body composition parameters.

Original languageEnglish
JournalClinics and Research in Hepatology and Gastroenterology
DOIs
Publication statusAccepted/In press - 2020

Keywords

  • body composition
  • glucagon-like peptide
  • inflammation
  • insulin secretion
  • metabolic syndrome

ASJC Scopus subject areas

  • Hepatology
  • Gastroenterology

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